Mapangidwe a kutentha-kuviika kanasonkhezereka wosanjikiza ndi njira yopangira chitsulo-zinki aloyi pakati pa chitsulo gawo lapansi ndi kunja koyera nthaka wosanjikiza.Chitsulo chachitsulo-zinc alloy chimapangidwa pamwamba pa workpiece pa kutentha-kuviika plating, kotero kuti chitsulo ndi woyera zinc wosanjikiza ali pafupi kwambiri.Kuphatikiza kwabwino.The ndondomeko lalikulu koyilo wawaya wamalataakhoza kufotokozedwa mophweka ngati: pamene chitsulo chogwiritsira ntchito chitsulo chimamizidwa mumadzi osungunuka a zinki, njira yolimba ya zinki ndi α-chitsulo (pakati pa thupi) imapangidwa poyamba pa mawonekedwe.Uyu ndi kristalo wopangidwa ndi kusungunula maatomu a zinki muchitsulo chachitsulo chokhazikika.Ma atomu awiri achitsulo amasakanikirana, ndipo kukopana pakati pa maatomu kumakhala kochepa.
Chifukwa chake, zinc ikafika pakuchulukira munjira yolimba, maatomu a zinki ndi chitsulo amafalikira wina ndi mzake, ndipo maatomu a zinki omwe amafalikira mu (kapena kulowa) mu matrix achitsulo amasuntha mumtambo wa matrix, pang'onopang'ono kupanga aloyi ndi chitsulo, ndi kufalikira mu Chitsulo mu madzi osungunuka zinki amapanga intermetallic pawiri FeZn13 ndi zinki, amamira pansi pa otentha-kuviika galvanizing mphika, ndi kukhala zinki slag.Pamene workpiece imachotsedwa ku zinki dipping solution, pamwamba pake imakhala yosanjikiza ya zinki, yomwe ndi kristalo wa hexagonal, ndipo chitsulo chake sichiposa 0.003%.
Hot-dip galvanizing, yomwe imadziwikanso kuti hot-dipgalvanizing, ndi njira yomwe zigawo zachitsulo zimamizidwa mu zinki zosungunuka kuti zipeze zokutira zitsulo.Ndi kukula kwachangu kwa magetsi othamanga kwambiri, zoyendera, ndi kulumikizana, zofunikira zachitetezo pazigawo zachitsulo zikuchulukirachulukira, komanso kufunikira kwa malata otentha akuchulukirachulukira.Kawirikawiri makulidwe a electro-galvanized wosanjikiza ndi 5-15 μm, pamene makulidwe a koyilo lalikulu kanasonkhezereka waya wosanjikiza zambiri pamwamba 35 μm, ngakhale mkulu 200 μm.Kutentha kwa dip galvanizing kumakhala ndi kuphimba bwino, zokutira wandiweyani, ndipo palibe organic inclusions.
Monga ife tonse tikudziwa, limagwirira zinki odana ndi mumlengalenga dzimbiri zikuphatikizapo mawotchi chitetezo ndi electrochemical chitetezo.Pansi pa nyengo ya dzimbiri mumlengalenga, pali ZnO, Zn(OH)2 ndi mafilimu oteteza zinc carbonate pamwamba pa nthaka wosanjikiza, omwe amachepetsa dzimbiri kumlingo wina.Gawo loyamba la filimu yoteteza (yomwe imadziwikanso kuti dzimbiri loyera) yawonongeka, ndipo filimu yatsopano idzapangidwa.
Pamene nthaka wosanjikiza kuonongeka kwambiri ndi kuika pachiwopsezo gawo lapansi chitsulo, nthaka electrochemically kuteteza gawo lapansi, muyezo kuthekera nthaka -0.76V, ndi kuthekera muyezo chitsulo ndi -0.44V.Pamene nthaka ndi chitsulo zimapanga batire yaying'ono, zinki zimasungunuka ngati anode, ndi chitsulo Chotetezedwa ngati cathode.Mwachiwonekere, galvanizing yotentha ndi yabwino kusiyana ndi electro-galvanizing yomwe imatha kukana kuwonongeka kwa mlengalenga kwachitsulo chachitsulo.
Nthawi yotumiza: 14-06-23